Apolis



(No Model.

W. COOPER, A. MILLIKEN & G. W; BISHOP.

HINGE MORTISER.

Patented May 21, 1889.

N. PETERS. Hantniymngmphu. Wuhmglon. D.c.

UNITED STATES PATENT OEEIcE.

VILLIAM COOPER, ALONZO MILLIKEN, AND GEORGE \V. BISHOP, OF MINNE-APOLIS, MINNESOTA, ASSIGNORS TO THE NORTHVESTERN TOOL AND IMPLEMENTCOMPANY, OF SAME PLACE.

HINGE-MORTISER.

SPECIFICATION forming part of Letters Patent No. 403,518, dated May 21,1889.

Application filed November 2, 1888. Serial No. 289,78. (N model.)

To all whom, it may concern.-

Be it known that we, WILLIAM COOPER, ALONZO MILLIKEN, and GEORGE W.BISHOP, citizens of the United States, residents of the city ofMinneapolis, county of Hennepin, State of Minnesota, have invented acertain new and useful Improvement in Hinge-Mortisers, of which thefollowing is a specification, reference being had to the accompany- IOing drawings.

Our invention relates to hinge-mortisers; and it has for its object toprovide an instrument which shall be simple in construction, reliable inits measurements, convenient of application, and efficient in its work.

It consists of the construction or constructions disclosed in thefollowing description and claims.

III the drawings, likeletters referring to like parts throughout,Figures 1 and 2 are plan views of our improved tool, illustrating,respectively, the manner of applying the gage to the door-jamb and thedoor, the door and jamb being shown in section. Fig. 3 is a sideelevation or plan view looking at the mortising-gage side of the tool.Fig. 4 is a vertical cross-section through the head of the tool, some ofthe parts being shown in side elevation and some parts being brokenaway. Fig. 5 is a 0 plan view looking down 011 the edges of the knivesand gages.

A is the stock or knife supporting block, having a rectangular head forattachment of the mortising-chisel, a projecting bracket for 3 5 thechip-knife, and a handle-socket.

B is the rectangular mortising-chisel, consisting of three independentknives secured to the three adjacent faces of the rectangular headuniting with each other by Initered joints and projecting to a properdistance below the outer end of the head. The fourth face of therectangular head is thus knifeless, leaving an opening into the spacebetween the chisel-edges, which for convenience will 4 5 hereinafter becalled the mouth of the chisel.

O is the chip-knife, rigidly secured to the projecting bracket of thestock opposite the chisel-mouth.

D is an adjustable stop adj ustably secured to the outer face of thechisel C, as shown, by the slot (1 and thumb screw d. The edge of thechip-knife is preferably on a level intermediate the levels of themortising-chisel and the chisel head or stock. In the top face of thisrectangular head is cut a groove or guide- 5 5 way, a,wherein is mountedthe stem 6 of an adj ustable chip-gage, E. The stem 6 of this guide isprovided with a slot, 6'. E is a set-screw working through this slotinto the body of the stock, having a head larger than the slot forsecuring the chip-gage in any desired po sition. The body of thisohip-gage sets substantially at right angles to the stem, and ispreferably made convex on its upper and concave on its under surface.Gis the tool-handle, adapted to fit the socket in the stock. WVith theexception of a slight difference in this chip-gage, the construction sofar de scribed is substantially like that in the old Mathews tool.

The improvement will now be described. Transversely from front to rearthrough the body of the stock below the level of the heels of themortising-knives extends a hole, H, which serves as a seat for the stemof the chisel-gage. K K 713 is this chisel-gage, of which K K representthe two sections of the faceplate and k the stem or shaft, which isadapted to fit and move within the seat H. This stem is provided with alongitudinal slot, 70', from end to end of the top surface of itsperiphery. At right angles to the seat I-I through the stock from thespace between the mortising-knives is a screw-threaded hole, L,terminating in the seat H. In this hole L fits a set-screw, L, havingaprojection or nipple, Z, on its end adapted to fit the groove 7c. Bymeans of this set-screw the gage-sten1 k may be secured in any desiredposition within the seat H. One section, K, of the face-plate K 0 K isfixed to the outer end of the stem is, and the other section, K, ismovable on the fixed section to form an extension thereof on the sameface-line. As shown, the movable sec tion is pivoted to the fixedsection by the pivot-pin M, so as to reverse thereon in the verticalplane, being thus adapted to turn down to give a measuring-face belowthe level of the chisel and to turn up out of the road of themeasuring-face of the fixed section,which terminates above the level ofthe chisel-edges. To secure the movable section in its proper respectivepositions on the fixed section, the inner face of the movable section isprovided with depressions N at points diametrically opposite the axis ofthe pivot-pin M, and ,a spring-actuated catch, P, is mounted in asuitable adjacent support for engaging with either of the depressions Nwhen brought into line therewith. As shown, this catch P is mounted in abored-out seat, 19, within the gage-stem k, and is operated by a spring,p, located in said seat behind the heel of the catch. The forward end ofthe catch is made conical, so as to be operated as a cam when turningthe movable section of the gage by hand. The spring may be of rubber,and the catch P may be otherwise mounted.

It will be readily understood that the movable section of the face-plateof the gage may be otherwise connected to the fixed section. Anyconstruction will answer which will make the face-plate extensible inthe same vertical plane, so as to permit the measurement to be made fromthe same vertical line in opposite directions from levels below andabove the edges of the chisel.

The operation is clear from the description and the illustration givenin Figs. 1 and 2.

To get the space behind the hinge on the jamb, the movable section K ofthe faceplate is turned up out of the road. The outer face of the fixedsection is placed against the back shoulder of the door-jamb and thejambmortise is cut, as shown in Fig. 1. To" get the same space outsidethe hinge on the door, the movable section is turned down and its innerface placed against the outer edge of the door, thus measuring backwardfrom the identical plane used to measure outward from the shoulder ofthe jamb, and the door-mortise is out. Of necessity the two spaces mustmatch. The chip-knife is then used to remove the chip and the two partsof the hingemortise are made.

What we claim, and desire to secure by Letters Patent of the UnitedStates, is as follows, viz:

1. In a hinge-mortiser, the combination, with the mortising-chisel, of atransverselyadjustable gage provided with an extensible face-plate,whereby the same gage is adapted to gage in opposite directions from twodifferent levels, one above and the other below the cutting-edge of thechisel, substantially as described.

2. In a hinge mortiser, the combination,

uring from a level below the edge of the chisel, substantially asdescribed.

4. In a hinge-mortiser, the combination, with the mortising-chisel, of atransverselyadjustable gage provided with a face-plate in two sections,one fixed and the other movable thereon, to form an extension thereof inthe same plane, and a locking device for locking the movable to thefixed sections, substantially as described.

5. In a hinge-mortiser, the combination,

with the mortise-chisel, of a transversely-adjustable gage provided witha face plate having two sections, one fixed and terminating above thelevel of the knives, and the other pivoted to the fixed section andreversible thereon to form an extension in the same plane to a levelbelow said knives, and having depressionsin its inner surface atdiametrically opposite points, and a spring actuated catch mounted inthe gage-shaft, adapted to engage said depressions and lock the movableto the fixed plate in the two diiferent positions, substantially asdescribed.

6. In a hinge-mortiser, the combination,

with the head or stock, of a three-sided rectangularmortising-chiselsecured thereto, a chipremoving knife secured to said stock opposite andslightly removed from the mouth of said chisel, a transversely-adjustable chipgage mounted in the top of said stock or head between theknives of said chisel, an outside horizontally-adjustable gage havingits stem mounted in said stock, provided with a faceplate in twosections, one fixed and the other movable thereon, to form an extensionthereof, and an adjustable stop mounted on the face of the chip-knifefor limiting the thrust thereof, substantially as described.

WILLIAM COOPER. ALONZO MILLIKEN. GEORGE W. BISHOP. In presence of- JAs.I WILLIAMSON, A. H. OPSAHL.

IIO

